Clean up announcement section of Readme
Clean up announcement section of Readme

This fixes a couple of misspelled words and capitalizes "Jade" to be
consistent with elsewhere in the Readme.

illusionfield/jade,Laoujin/jade,muthhus/jade,mumaoxi/jade,magicdawn/jade,coderhaoxin/jade,timmfin/jade,ceremcem/jade,colin-h/jade,slang800/yade,ridixcr/jade,Shinchy/jade,hnag409/jade,modulexcite/jade,angryrobot/jade,omixen/jade,hnag409/jade,angrilove/jade,cesarmarinhorj/jade,Victorgichohi/jade,andreytkachenko/jade,martindale/jade,rajnishyadav321/jade,magicdawn/jade,gdibble/jade,tranhieutt/jade,cutsin/jade,pugjs/jade,omixen/jade,Mitrend/jade,nyakto/jade-async,cutsin/jade,ridixcr/jade,jodytate/jade,muthhus/jade,angrilove/jade,VANITAX/jade,nyakto/jade-async,pugjs/then-jade,fredyteheranto/jade,gexiaowei/jade,mumaoxi/jade,jjz/jade,VeraWei/jade,jjz/jade,VANITAX/jade,fredyteheranto/jade,Victorgichohi/jade,cgvarela/jade,webmasteraxe/jade,ilovezy/jade,harp/jade,webmasteraxe/jade,harp/jade,angryrobot/jade,jadejs/then-jade,Shinchy/jade,flintinatux/jade,mrotaru/jade,modulexcite/jade,ilovezy/jade,illusionfield/jade,colin-h/jade,rajnishyadav321/jade,jadejs/then-jade,jirengu/jade,cgvarela/jade,pugjs/jade,coderhaoxin/jade,pugjs/then-jade,webskyer/jade,Laoujin/jade,pugjs/pug,tranhieutt/jade,pugjs/pug,mrotaru/jade,cesarmarinhorj/jade,bogus34/jade-vfs,gexiaowei/jade,VeraWei/jade,andreytkachenko/jade,webskyer/jade,bogus34/jade-vfs,jirengu/jade,martindale/jade,Mitrend/jade,gdibble/jade,jodytate/jade